Analytical Instruments Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur, India.
Environ Monit Assess. 2010 Sep;168(1-4):489-97. doi: 10.1007/s10661-009-1129-9. Epub 2009 Aug 13.
Trihalomethane (THM) formation potential (TFP) is very useful test to assess the level of the formation of trihalomethanes in worst case scenario. Organics in water have the potential to generate harmful disinfection by-products (DBPs) such as THMs, as a result of their reaction with disinfectant chlorine used in drinking water. DBPs are increasingly recognized as cancerous agents. TFP of postchlorinated treated water were investigated at six water treatment plants (WTPs) in Delhi City (India). The present paper presents the current trends of TFP so that prevention and control measures can be initiated by the regulating agencies responsible for drinking water supply. Liquid-liquid extraction method, followed by qualitative and quantitative estimation by gas chromatograph equipped with electron capture detector, had been used for the determination of THMs in water samples collected at the outlet just before supplying to the consumers during 2000-2007. The TFP values from 2004 onward of all WTPs did not exceed the WHO guideline value of <or=1.
三卤甲烷（THM）形成潜力（TFP）是评估最坏情况下三卤甲烷形成水平的非常有用的测试。水中的有机物有可能与饮用水中使用的消毒剂氯发生反应，生成有害的消毒副产物（DBP），如三卤甲烷。DBP 被越来越多地认为是致癌物质。在印度德里市的六个水处理厂（WTP）对氯化后处理水的 TFP 进行了调查。本文介绍了 TFP 的当前趋势，以便负责饮用水供应的管理机构能够采取预防和控制措施。在 2000 年至 2007 年期间，在向消费者供水之前，在出口处收集水样，采用液-液萃取法，然后用配备电子俘获检测器的气相色谱仪进行定性和定量估计，对水样中的三卤甲烷进行了测定。自 2004 年以来，所有 WTP 的 TFP 值均未超过世卫组织的指导值<or=1。
